/* ============================================
   PROPERTICA REAL ESTATE — Design System
   Premium Landing Page
   ============================================ */

/* --- Fonts --- */
@font-face {
    font-family: 'Mont';
    src: url('../fonts/Mont-Regular.otf') format('opentype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Mont';
    src: url('../fonts/Mont-SemiBold.otf') format('opentype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Mont';
    src: url('../fonts/Mont-Bold.otf') format('opentype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* --- CSS Variables --- */
:root {
    /* Primary — Navy Blue */
    --color-primary: #1B5E7B;
    --color-primary-rgb: 27, 94, 123;
    --color-primary-dark: #144B63;
    --color-primary-darker: #0E3A4E;
    --color-primary-light: #2A7A9E;
    --color-primary-lighter: #3A8DB2;

    /* Accent — Red */
    --color-accent: #C84032;
    --color-accent-rgb: 200, 64, 50;
    --color-accent-dark: #A83529;
    --color-accent-light: #E04E3E;

    /* CTA — Gold */
    --color-cta: #FFCC4A;
    --color-cta-rgb: 255, 204, 74;
    --color-cta-dark: #E6B83D;
    --color-cta-light: #FFD96B;
    --color-cta-text: #32373c;

    /* Neutrals */
    --color-dark: #1a1a2e;
    --color-dark-rgb: 26, 26, 46;
    --color-white: #ffffff;
    --color-gray-50: #f8f9fc;
    --color-gray-100: #f0f2f7;
    --color-gray-200: #e2e5ec;
    --color-gray-300: #cdd1da;
    --color-gray-400: #9ca3b0;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    /* Border Radius — Sharp, Architectural */
    --radius-sm: 3px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 6px;
    --radius-2xl: 8px;
    --radius-full: 6px;

    /* Shadows — Minimal, Clean */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
    --shadow-sm: 0 1px 4px rgba(0,0,0,0.04);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-xl: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-2xl: 0 12px 32px rgba(0,0,0,0.1);
    --shadow-primary: 0 4px 12px rgba(27, 94, 123, 0.15);
    --shadow-primary-lg: 0 8px 24px rgba(27, 94, 123, 0.2);
    --shadow-cta: 0 4px 16px rgba(255, 204, 74, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Z-Index */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;

    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
}

/* --- Reset --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Montserrat', 'Mont', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 400;
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-gray-700);
    background: var(--color-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

button {
    cursor: pointer;
}

/* --- Container --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-dark);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-center { text-align: center; }

/* --- Section Layout --- */
.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
}

.section--dark {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-primary-darker) 100%);
    color: var(--color-white);
}

.section--gray {
    background: var(--color-gray-50);
}

.section__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: var(--spacing-lg);
    border: 1.5px solid rgba(var(--color-primary-rgb), 0.2);
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.05);
}

.section--dark .section__badge {
    border-color: rgba(255,255,255,0.2);
    color: var(--color-cta);
    background: rgba(255,255,255,0.05);
}

.section__badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-cta);
    animation: pulse 2s infinite;
}

.section__title {
    margin-bottom: var(--spacing-md);
}

.inline-logo {
    display: inline-block;
    height: 1.15em;
    vertical-align: baseline;
    position: relative;
    top: 0.05em;
    margin-left: 0.1em;
}

.section__subtitle {
    font-size: 1.1rem;
    color: var(--color-gray-500);
    max-width: 640px;
    line-height: 1.7;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section__header .section__subtitle {
    margin: 0 auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn-cta {
    background: var(--color-cta);
    color: var(--color-cta-text);
    box-shadow: var(--shadow-cta);
}
.btn-cta:hover {
    background: var(--color-cta-dark);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(255, 204, 74, 0.5);
}
.btn-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s;
}
.btn-cta:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary-lg);
}

.btn-outline {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    background: transparent;
}
.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

.btn-white {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}
.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.85rem;
}

.btn-full { width: 100%; }

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* --- Cards --- */
.card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* --- Forms --- */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-gray-700);
    margin-bottom: 6px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--color-gray-700);
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.1);
}

.form-input::placeholder {
    color: var(--color-gray-400);
}

.form-select {
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 44px;
}

/* --- Animations --- */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(var(--rotate, 0deg)); }
    50% { transform: translateY(-20px) rotate(var(--rotate, 0deg)); }
}

@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

@keyframes slideInfinite {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Scroll Reveal */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

[data-reveal="left"] { transform: translateX(-30px); }
[data-reveal="left"].revealed { transform: translateX(0); }

[data-reveal="right"] { transform: translateX(30px); }
[data-reveal="right"].revealed { transform: translateX(0); }

[data-reveal="scale"] { transform: scale(0.9); }
[data-reveal="scale"].revealed { transform: scale(1); }

/* --- Utility --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* --- Preloader --- */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader__spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}